Bellows



(No Model.)

A. M. WIGKENBBRG.

BBLLOWS.

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Unirse Sterns @arent @einen ALFRED M. W'ICKENBERG, OF MlNNEAPOLlS,MINNESOTA.

BELLOWS.

SPEGIFCATION forming part of Letters Patent No.4 546,370, datedSeptember 17,1825.

Application filed April 22, 1895. Serial No. 546,591. (No model.)

To all wir/0m t may concern:

Be it known that I, ALFRED M. WICKEN- nERG, ot the city of Minneapolis,county of llennepin, State of Minnesota, have invented certain new anduseful Improvements in Bellows, of which the following' is aspecification.

My invention relates to bellows, and particularly to that class used inconnection with blacksmith-forges; and the primary object of myinvention is to provide a bellows which will maintain a continuous blastof air upon the tire while the bellowsdever is being operated and for aperiod of time after the lever has been released by the operator.

A further object is to provide a telescopio bellows in which theliexible leather portion between the top and bottom of the ordinarybellows is done away with, and in which are arranged a series ofpacking-strips or blocks, which serve to prevent the air from escapingaround the edges of the movable portion of the bellows.

My invention consists, generally, in various details of construction andin combinations, all as hereinafterdescribed, and particularly pointedout in the claims.

My invention will be more readily understood by reference to theaccompanying drawings, forming part of this specification, and in which-Figure l is a vertical longitudinal section of a bellows embodying myinvention. Fig. 2 is a horizontal section showing the method ofarranging the packing-strips upon the stationary portion. Figs. 3 and 4:are details showing the manner of litting the ends of the packing-stripstogether and the springs connecting said strips. Fig. 5 is a sectionalview showing the method of holding the packingstrips together and theclamp orhook which holds them in position.

In the drawings, 2 represents the tapering sides of the fixed portion ofthe bellows, and 3 the slightly-curved end portion, which connects thesides 2 and rests upon the plate or strip 4, which is in turn supportedby the standard 5. The opposite end of the bellows is supported by thestandard 6, connected by suitable cross-bars 7, and connected to thestandard 5 by the bar 8. The upper part of the fixed portion is formedby the part or top 9, having an opening 10, on the upper side of whichis pivoted the valve 11. The lower side of the lined portion is open andis adapted to receive a movable portion 12, pivoted at one end to afixed portion, and provided upon its upper surface and extending aroundits edges are a series of strips or blocks 13, having their ends looselyiitted together and connected by springs 14, as shown in Fig. 4. Thesesprings tend to hold the longitudinal edge of the packing strips orblocks iu close contact with the sides 2 and 'the end 3 of the fixedportion of the bellows, thereby preventing any escape of air around theedge of the movable part 12. The part 12 is also provided with auopening l5, above which is pivoted a valve 1o, and provided on its undersurface with a curved bar or arm 17, and the brace 1S is providedextending from near the outer end of said bar to the free end of thepart 12. EX- tending above the bellows is a standard i9, provided with across-arm 20, on the under side of which is suspended a long lever 21,and the chain or cord 22 connects one end ot' said lever with the outerend of the arm 17, so that when the opposite or free end of the lever 21is pressed down, the part 12 will be raised up on its hinges or pivotsand within the fixed portion of the bellows. Above the valve 11 in thetop of the ixed portion, I provide another series of packing strips orblocks 23, joined together in the same manner as the blocks carried bythe portion 12 and held against the sides and end of the movable portionarranged above the stationary part ot the bellows, as shown vin Fig. 1.This movable part is pivoted at one end to the ixed portieri andcomprises the top 24, the end 25, and sides 26. The sides and end are inclose Contact with the packing-stri ps carried by the xed portion andprevent the escape of air between said strips and the sides and edges ofsaid movable portion. At the smaller end of the fixed portion I providea nozzle 26', and a passage is provided leading from the space withinthe upper movable portion to said nozzle. A valve is arranged in saidpassage by means of which the passage of air through the nozzle may beregulated or shut oft altogether. The valve consists of a sliding block27, held in position bythe spring 2S, and operated from the outside by acrank 29, which extends out through the wall ot' the ICO passage.Suitable hooks 30 are arranged at the intersection of the blocks 28,which, with the springs 3l, tend to hold the blocks or strips inposition. It desired, I may use simple strips of rubber or leather,having their longitudinal edge secured to the fixed portion ot' thebellows and fitting closely within the movable portion, so as to preventthe escape of air from the chamber. Similar strips may also be providedon the movable part 12.

The operation of the bellows is as follows: Vhen the lever 2l is presseddown, the pivoted portion 12 wilt be raised up within the fixed portion,compressing the air therein, forcing the valve 11 open, and :forcing airup into the space within the pivoted portion in the upper part of thebellows. As the lever 2l is lowered to return to its normal position,the part 12 will drop, the valve 16 will open, allowing the space abovethe movable portion l2 to fill with air again, so that when the lever2l. is again depressed, the air will again be forced into the chamberabove the iixed portion, as before. This process may be continued untilthe movable portion is raised to its highest point and the chamberentirely filled with air. able portion will then cause a continuouscurrent of air to fiow out through the nozzle 26 all the time that thelever 21 is being operated, and until such time after the operation hasceased as the air has entirely passed ont of the chamberor has beenreduced to normal atmospheric pressure.

Having thus described my invention, I claim as new and desire to secureby Letters Patent* 1. A bellows, provided with an air chamber comprisingthe sides 2, the top 9 provided with a suitable opening, the valve 10for closing said opening, the curved part 3 forming one end of saidchamber, the pivoted part 12 forming the bottom of said chamber, andarranged to move up and down therein, said part 12 being provided with asuitable open ing, a valve for closing said opening, the pack ing stripscarried by said part 12, springs for holding said packing strips inclose contact with the walls of said chamber, and a second chamberarranged above said fixed portion and provided with a suitable outlet,for the purpose set forth.

2. A bellows, comprising a fixed and a pivoted portion, forming theprimary chamber, a second pivoted portion arranged above said The Weightof the upper mov` fixed portion, and forming a secondary chambercommunicating with said rst named or primary chamber, said fixed portionbeing provided with a series of packing strips, means for holding saidstrips in close contact with the walls of said second pivoted portion,and said fixed portion being also provided with a suitable passageforming the outlet to said secondary chamber, and means for closing saidpassage, substantially as described.

3. A bellows having a primary chamber, comprising a fixed portion, thepivoted portion forming the bottom of said chamber, said portion beingprovided with packing strips in close contact with the walls of saidchamber, a valve for admitting air to said chamber, a second pivotedportion arranged above said primary chamber, forming with said fixedportion a secondary chamber, said fixed portion being provided with apassage leading to said secondary chamber, said iixed portion beingprovided on its upper surface with a series of packing strips or blocks,means for holding the same in close contact with the wallsof said secondpivoted portion, said fixed portion being provided with an outletleading from the space beneath said second pivoted portion, and asliding valve for closing said outlet or passage, substantially asdescribed.

4. A bellows having a primary chamber, comprising a fixed and a pivotedportion forming the bottom of said chamber and adapted to compress theair within said fixed portion, said iixed portion being provided with anopening, the valve for closing said opening, the lever for raising saidpivoted portion to compress the air within said iixed portion, a secondpivoted portion arranged above said xed portion, forming therewith asecondary chamber communicating with said primary chamber, a valve forclosing the passage between said chambers, suitable packing arrangedupon the upper surface of said xed portion and in close contact With thewalls of said second pivoted portion, whereby the escape of air fromsaid secondary chamber is prevented, and said fixed portion being provided with a passage leading` from said secondary chamber, substantiallyas described.

In testimony whereof I have hereunto set my hand this 15th day of April,A. D. 1895.

ALFRED H. WIOKENBERG. ln presence 0f- F. S. LYON, RICHARD PAUL.

ICO

